(19)

(11)

EP 2 485 644 A1

(12)

(43) Date of publication: 15.08.2012 Bulletin 2012/33 (21) Application number: 10822295.1 (22) Date of filing: 11.10.2010

(51) International Patent Classification (IPC):  A61B 5/12(2006.01) H04R 25/00(2006.01) A61F 11/04(2006.01) (86) International application number: PCT/NZ2010/000202 (87) International publication number: WO 2011/043678 (14.04.2011 Gazette 2011/15)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 09.10.2009 NZ 58035009 (71) Applicant: Auckland Uniservices Limited Auckland 1010 (NZ)	(72) Inventors: SEARCHFIELD, Grant Donald Waitakere Auckland 0604 (NZ) KOBAYASHI, Kei Waitakere Auckland 0602 (NZ) IRVING, Samuel Parnell Auckland 1052 (NZ) (74) Representative: Brown, David Leslie  Haseltine Lake LLP Redcliff Quay 120 Redcliff Street Bristol BS1 6HU Bristol BS1 6HU (GB)